Bottle opener



FIG. 1 is a front elevational view of a bottle opener showing my new design, the rear elevational view being the mirror image thereof;

FIG. 2 is a right side elevational view thereof, the left side elevational view thereof being the mirror image of FIG. 2;

FIG. 3 is a top plan view thereof; and,

FIG. 4 is a bottom plan view thereof. 

The ornamental design for a bottle opener, as shown and described. 